code: def test_get_parameters(self):
      cpds = set(
          [
              self.est3.estimate_cpd("A"),
              self.est3.estimate_cpd("B"),
              self.est3.estimate_cpd("C"),
          ]
      )
      self.assertSetEqual(set(self.est3.get_parameters(n_jobs=1)), cpds)
  
imports: import unittest
  import numpy
  import pandas
  from joblib.externals.loky import get_reusable_executor
  from pgmpy import config
  from pgmpy.estimators import BayesianEstimator
  from pgmpy.factors.discrete import TabularCPD
  from pgmpy.models import BayesianNetwork
label_desc: Use image node_id 6 for calling the TestBayesianEstimator obj's underlying member method code with example usage: obj.test_get_parameters() without return types